CN214374900U

CN214374900U - Fuel cell clamp testing device

Info

Publication number: CN214374900U
Application number: CN202023316710.5U
Authority: CN
Inventors: 高鹏; 杜晓武; 刘艳喜; 程刚; 赵洪飞
Original assignee: Dalian Rigor New Energy Technology Co ltd
Current assignee: Dalian Rigor New Energy Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-08
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a fuel cell anchor clamps testing arrangement belongs to the fuel cell field, the utility model discloses an anchor clamps testing arrangement mainly places frame structure district two parts by servo electric jar and battery end plate and constitutes, and the main part that frame structure district was placed to the battery end plate is connected fixedly by anchor clamps upper end plate, anchor clamps lower end plate, anchor clamps front end plate and anchor clamps rear end plate and constitutes, and servo electric jar is connected with anchor clamps front end plate, and the ejector pin of servo electric jar passes anchor clamps front end plate, places fuel cell between ejector pin and the anchor clamps rear end plate. The utility model discloses provide the executor with servo electric jar as pressure, can accurate control given pressure accuracy and displacement precision, the ejector pin head of electric jar is spherical surface structure, ensures pressure uniformity. The device has strong expansibility, and can be used for testing a single fuel cell and also used for testing a plurality of fuel cells.

Description

Fuel cell clamp testing device

Technical Field

The utility model belongs to the fuel cell field, concretely relates to fixture device is used in fuel cell test.

Background

The hydrogen fuel cell uses hydrogen and oxygen as raw materials, directly converts chemical energy of the fuel into electric energy, and is a device for generating electricity by using renewable energy sources. Compared with the conventional power generation technology, the fuel cell has great advantages in the aspects of efficiency, safety, reliability, flexibility, cleanness, operating performance and the like, and has a very wide application prospect. As one of the fuel cells, the pem fuel cell has the advantages of low operating temperature, high specific energy, long service life, fast response speed and no electrolyte leakage. The hydrogen and the oxygen take part in the reaction to generate current, and the byproduct is water, so the method has good application prospect in the aspects of national defense, energy, traffic, environmental protection, communication and the like. In testing proton exchange membrane fuel cells, pressure control given to the fuel cell is one of the most important links. Most of the existing fuel cell testing devices are directly fastened and compressed by bolts or compressed by cylinders, and although pressure can be provided, the existing fuel cell testing devices cannot provide accurate pressure control and displacement control, so that accurate data cannot be provided, and further the performance test of the fuel cell is influenced.

SUMMERY OF THE UTILITY MODEL

To the above, the utility model provides a pressure accurate control fixture device that fuel cell test was used. The device has strong expansibility, and can be used for testing a single fuel cell and also used for testing a plurality of fuel cells.

The utility model discloses an anchor clamps testing arrangement mainly places frame structure district two parts by servo electric jar and battery end plate and constitutes, and the main part that frame structure district was placed to the battery end plate is connected fixedly by anchor clamps upper end plate, anchor clamps lower end plate, anchor clamps front end plate and anchor clamps rear end plate and is formed, and servo electric jar is connected with the anchor clamps front end plate, and the ejector pin of servo electric jar passes the anchor clamps front end plate, places fuel cell between ejector pin and the anchor clamps rear end plate.

Further, the head end surface is a spherical contact surface which is in contact with the cell end plate planar end surface of the fuel cell.

The fuel cell is a single cell or a plurality of cells. Further, the fuel cell unit structure is: the proton membrane is taken as the center, and a catalyst coating, a gas diffusion layer, a sealing gasket, a unipolar plate, a current collecting plate and a battery end plate are sequentially arranged on two sides of the proton membrane respectively, so that the two side structures of the proton membrane are symmetrical.

Furthermore, a heating rod is arranged above the battery end plate and used for heating the battery.

Further, a temperature sensor is mounted on the unipolar plate for monitoring and managing the temperature of the fuel cell.

Furthermore, a current collecting plate is arranged in front of the unipolar plate and the battery end plate.

Further, the gas diffusion layer is carbon paper.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses provide the executor with servo electric jar as pressure, servo electric jar is connected with the end plate frame construction that is used for placing fuel cell, and the ejector pin head end face of electric jar is spherical surface structure to when guaranteeing that the ejector pin compresses tightly, the packing force evenly transmits the battery end plate on, relies on servo electric jar accurate control ejector pin to release and produces the clamp force, compresses tightly the monocell.

2. The utility model adopts the high-precision servo electric cylinder as the actuator for compressing the fuel cell, can accurately control the given pressure precision, and the precision can reach +/-0.03 percent F.S; the method can accurately control the given displacement precision, the precision can reach +/-0.05 percent F.S, and the pressure uniformity on the plane is ensured.

3. The utility model discloses compress tightly and loosen each subassembly of fuel cell with servo electric jar, make the installation of battery and dismantle more convenient and fast, the different battery pack of quick replacement when being convenient for experiment test. However, the fuel cell clamp of the conventional structure mostly adopts a method of fastening end plates at two ends by bolts to press a single cell, and cannot ensure accurate pressure, pressing displacement and pressure uniformity on a plane.

4. The utility model provides a fixture device expansibility is strong, not only can be used for single section fuel cell's test to use, also can be used for multisection fuel cell's test to use.

Drawings

Fig. 1 is a schematic view of a fuel cell structure.

Fig. 2 is a schematic structural diagram of a fuel cell fixture testing apparatus.

Fig. 3 is an enlarged view of a portion of the stem lifter of fig. 2.

The device comprises a proton membrane 1, a proton membrane 2, a catalyst coating 3, a gas diffusion layer 4, a sealing gasket 5, a unipolar plate 6, a current bus plate 7, a battery end plate 8, a clamp upper end plate 9, a clamp lower end plate 10, a clamp front end plate 11, a clamp rear end plate 12, a push rod 13, a servo electric cylinder 14, a heating rod 15 and a temperature sensor.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, but the scope of the invention is not limited thereto.

Example 1

As shown in fig. 1, a module of a fuel cell unit is assembled by disposing a catalyst coating layer 2, a gas diffusion layer 3, a gasket 4, a unipolar plate 5, a current collector plate 6, and a cell end plate 7 on each side of a proton membrane 1 in this order with the proton membrane 1 as the center, and making the two sides of the proton membrane 1 symmetrical in structure. Among them, the gas diffusion layer 3 may employ carbon paper. The catalyst coating may be obtained by spraying the catalyst directly onto the proton membrane 1.

As shown in fig. 2, the fuel cell unit is mounted on a jig testing apparatus after the components of the fuel cell unit are assembled. The clamp testing device mainly comprises a servo electric cylinder 13 and a monocell end plate placing frame structure area, wherein the servo electric cylinder 13 is a high-precision servo electric cylinder 13, and can accurately control given pressure precision and displacement precision. The main body of the single cell end plate placing frame structure area is connected and fixed by a clamp upper end plate 8, a clamp lower end plate 9, a clamp front end plate 10 and a clamp rear end plate 11 to form a rectangular frame. FIG. 3 is an enlarged view of a portion of the top bar of FIG. 2, and FIG. 3 is a left view showing a state where the top bar is extended to press the battery; the right drawing shows the state that the ejector rod retreats away from the battery, the end surface of the head part of the ejector rod is a spherical contact surface, and the end plate of the battery is a plane end surface.

The servo electric cylinder 13 is connected with the front end plate 10 of the clamp, the ejector rod 12 of the servo electric cylinder penetrates through the front end plate of the clamp, the bottom surface of the battery end plate 7 is used as a reference surface to be placed on the lower end plate 9 of the clamp, the single battery is positioned between the ejector rod 12 and the rear end plate 11 of the clamp, after the servo electric cylinder 13 is started, the ejector rod 12 extends out, the head of the ejector rod 12 is pressed on the battery end plate 7, the end face of the head of the ejector rod 12 is a spherical contact face, and the spherical contact face is in contact with the planar end face of the battery end plate 7 of the fuel battery, so that the pressure uniformity is improved. After the ejector rod 12 of the servo cylinder 13 presses the single cell with the set pressure, the single cell is ventilated and is detected by a pressure gauge, and if no leakage exists, the fuel cell can be tested for use. A heating rod 14 is arranged above the battery end plate 7 and used for heating the battery; a temperature sensor 15 is mounted on the unipolar plate 5 for monitoring and managing the temperature of the single cells. A current collector plate 6 is also provided before the unipolar plate 5 and the battery end plate 7. The control part of the device is controlled by the touch screen to operate, and the PLC program controls and sets various displacements and pressure values to carry out accurate test. The device uses the network interface to be connected with the computer so as to output data for experimental data analysis.

Example 2

The difference between this embodiment and embodiment 1 is that a plurality of fuel cells are placed between the ejector rod 12 of the servo electric cylinder 13 and the rear end plate 11 of the fixture, after the servo electric cylinder 13 is started, the ejector rod 12 extends out, so that the head of the ejector rod 12 presses on the cell end plate 7, the ejector rod 12 of the servo electric cylinder 13 presses the fuel cell at a given pressure value, and the plurality of fuel cells are ventilated, and if no leakage exists, a relevant performance test of the fuel cell can be performed.

The above description is only for the purpose of creating a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a fuel cell anchor clamps testing arrangement, a serial communication port, it is mainly placed frame structure district two parts by servo electric jar (13) and battery end plate and constitutes, the main part that frame structure district was placed to the battery end plate is connected fixedly by anchor clamps upper end plate (8), anchor clamps lower end plate (9), anchor clamps front end plate (10) and anchor clamps rear end plate (11) and constitutes, servo electric jar (13) are connected with anchor clamps front end plate (10), ejector pin (12) of servo electric jar pass anchor clamps front end plate, place fuel cell between ejector pin (12) and anchor clamps rear end plate (11).

2. The fuel cell jig testing device according to claim 1, wherein the end surface of the head of the ejector rod (12) is a spherical contact surface which is in contact with the planar end surface of the cell end plate (7) of the fuel cell.

3. A fuel cell fixture testing apparatus according to claim 1, wherein the fuel cell is a single cell or a plurality of cells.

4. A fuel cell fixture testing apparatus according to claim 3, wherein the unit cell structure is: the proton membrane fuel cell is characterized in that a proton membrane (1) is taken as a center, and a catalyst coating (2), a gas diffusion layer (3), a sealing gasket (4), a unipolar plate (5), a current collecting plate (6) and a cell end plate (7) are sequentially arranged on two sides of the proton membrane (1) respectively, so that the two side structures of the proton membrane (1) are symmetrical.

5. A fuel cell fixture testing apparatus according to claim 1, wherein a heating rod (14) is provided above the cell end plate (7) for providing a warming heat to the cell.

6. A fuel cell fixture testing apparatus according to claim 1, wherein a temperature sensor (15) is mounted on the unipolar plate (5) for monitoring and managing the temperature of the fuel cell.

7. A fuel cell fixture testing apparatus according to claim 1, wherein a current bus plate (6) is further provided before the unipolar plates (5) and the cell end plates (7).

8. The fuel cell fixture testing apparatus of claim 4, wherein the gas diffusion layer (3) is carbon paper.